noun. a small asexual spore that develops inside the cell of some bacteria and algae.
noun. a group of true bacteria.
Example sentences of the word endospore
1. Noun, singular or mass
Many other organelles besides those already described are present in the mold spore but absent in the bacterial endospore.
When a required nutrient in the environment becomes depleted or absent, signals get sent to the bacteria to begin endospore formation.